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Finding the Fourth Proportional to 347,625, 479,722.56 and 188,649

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Solution

The fourth proportional to 347,625, 479,722.56 and 188,649 is: 260,335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,625 : 479,722.56 = 188,649 : x
  2. Step 2: Convert to fraction form
    347,625/479,722.56 = 188,649/x
  3. Step 3: Cross multiply
    347,625x = 479,722.56 × 188,649
  4. Step 4: Simplify right side
    347,625x = 90,499,181,221.44
  5. Step 5: Solve for x
    x = 90,499,181,221.44/347,625
  6. Step 6: Final answer
    x = 260,335.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.